18578945

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{107}}^1$

素因数の和:182

約数の個数: 48

約数和(自身を含む): 28957824

約数和(自身を除く): 10378879

約数列:

[1, 5, 7, 11, 35, 41, 55, 77, 107, 121, 205, 287, 385, 451, 535, 605, 749, 847, 1177, 1435, 2255, 3157, 3745, 4235, 4387, 4961, 5885, 8239, 12947, 15785, 21935, 24805, 30709, 34727, 41195, 48257, 64735, 90629, 153545, 173635, 241285, 337799, 453145, 530827, 1688995, 2654135, 3715789, 18578945]

約数ペア:

[(1, 18578945), (5, 3715789), (7, 2654135), (11, 1688995), (35, 530827), (41, 453145), (55, 337799), (77, 241285), (107, 173635), (121, 153545), (205, 90629), (287, 64735), (385, 48257), (451, 41195), (535, 34727), (605, 30709), (749, 24805), (847, 21935), (1177, 15785), (1435, 12947), (2255, 8239), (3157, 5885), (3745, 4961), (4235, 4387)]